federal_register: 2019-25010

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document_number title type abstract publication_date pub_year pub_month html_url pdf_url agency_names agency_ids excerpts regulation_id_numbers
2019-25010 Airworthiness Directives; Pratt & Whitney Canada Corp. Turboshaft Engines Rule The FAA is superseding Airworthiness Directive (AD) 2015-20-04 for certain Pratt & Whitney Canada Corp. (P&WC) PT6B-37A turboshaft engines. AD 2015-20-04 required initial and repetitive inspections until replacement of the No. 10 bearing, and eventual replacement of the No. 9 bearing, both located in the engine reduction gearbox (RGB) assembly. This AD requires removal from service and replacement of the No. 9 and No. 10 position bearings. This AD was prompted by reports of incorrect engine torque for PT6B-37A turboshaft engines. The FAA is issuing this AD to address the unsafe condition on these products. 2019-11-19 2019 11 https://www.federalregister.gov/documents/2019/11/19/2019-25010/airworthiness-directives-pratt-and-whitney-canada-corp-turboshaft-engines https://www.govinfo.gov/content/pkg/FR-2019-11-19/pdf/2019-25010.pdf Transportation Department; Federal Aviation Administration 492,159 The FAA is superseding Airworthiness Directive (AD) 2015-20-04 for certain Pratt & Whitney Canada Corp. (P&WC) PT6B-37A turboshaft engines. AD 2015-20-04 required initial and repetitive inspections until replacement of the No. 10 bearing, and eventual... 2120-AA64

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